Book excerpt: Echocardiography has now reached its maturity and plays a key role in the clinical assessment of cardiac function. However, its ability to assess myocardial perfusion remains a clinical challenge. Myocardial contrast echocardiography is a technique that uses microbubbles. These microbubbles remain entirely within the intravascular space and their presence in any myocardial region denotes the status of microvascular perfusion within that region. During the last few years, a large number of research studies have been dedicated to this topic. The latest developments in echocardiographic techniques and second-generation contrast agents allow for the potential assessment of myocardial perfusion and provide an accurate endocardial border delineation. In the present book, these new echocardiographic techniques dedicated to the assessment of myocardial perfusion are described in detail by experts from both sides of the Atlantic. Tips and tricks are included, explaining the basic concepts that are needed to understand and perform contrast echocardiography.